Radiative decays of hadronic molecules: From confusion to inspiration

Abstract

Radiative decays of hadronic states provide an essential source of information that can facilitate deciphering their nature and properties. However, a lot of confusion concerning radiative decays of hadronic molecules and their interpretation can be found in the literature. In this paper, we briefly review several types of such decays and pinpoint similarities and essential differences between them. In particular, we emphasise the crucial role played by the hierarchy of the scales relevant to the studied system and the resulting necessity of employing an approach that considers them appropriately. We illustrate the situation with several instructive examples.

15 pages, 7 figures, 1 table

References in corpus (15)

• Dynamically Generated Open and Hidden Charm Meson Systems
• Dynamically generated 0^+ heavy mesons in a heavy chiral unitary approach
• Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture
• Dynamically generated 1^+ heavy mesons
• Radiative and isospin-violating decays of Ds mesons in the hadrogenesis conjecture
• High statistics study of f_0(980) resonance in gamma gamma --> pi^+ pi^- production
• Two-photon decays of hadronic molecules
• What can radiative decays of the X(3872) teach us about its nature?
• Strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$
• Remarks on the study of the X(3872) from Effective Field Theory with Pion-Exchange Interaction
• Once more about the K\bar K molecule approach to the light scalars
• Update on strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ and their bottom cousins
• Radiative decays of the spin-$2$ partner of $X(3872)$
• Comment on "Once more about the KK molecule approach to the light scalars"
• The nature of ${\chi }_{c1}\left(3872\right)$ and $T_{cc}^{+}\left(3875\right)$